/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.assembler.test;

import java.util.*;

import org.apache.jena.assembler.*;
import org.apache.jena.reasoner.rulesys.Rule;
import org.apache.jena.shared.BrokenException;

public class TestRuleSet extends AssemblerTestBase {
    public TestRuleSet(String name) {
        super(name);
    }

    @Override
    protected Class<? extends Assembler> getAssemblerClass() {
        throw new BrokenException("TestAssemblers does not need this method");
    }

    public void testEmpty() {
        assertEquals(Collections.emptyList(), RuleSet.empty.getRules());
        assertEquals(RuleSet.empty, RuleSet.create(Collections.<Rule> emptyList()));
    }

    public void testEmptyRuleSet() {
        RuleSet s = RuleSet.create(Collections.<Rule> emptyList());
        assertEquals(Collections.emptyList(), s.getRules());
        assertNotSame(Collections.emptyList(), s.getRules());
    }

    public void testSingleRuleSet() {
        Rule rule = Rule.parseRule("[(?a P b) -> (?a rdf:type T)]");
        List<Rule> list = listOfOne(rule);
        RuleSet s = RuleSet.create(list);
        assertEquals(list, s.getRules());
        assertNotSame(list, s.getRules());
    }

    public void testMultipleRuleSet() {
        Rule A = Rule.parseRule("[(?a P b) -> (?a rdf:type T)]");
        Rule B = Rule.parseRule("[(?a Q b) -> (?a rdf:type U)]");
        List<Rule> rules = Arrays.asList(A, B);
        RuleSet s = RuleSet.create(rules);
        assertEquals(rules, s.getRules());
        assertNotSame(rules, s.getRules());
    }

    public void testFactoryForString() {
        String ruleString = "[(?a P b) -> (?a rdf:type T)]";
        RuleSet s = RuleSet.create(ruleString);
        assertEquals(Rule.parseRules(ruleString), s.getRules());
    }

    public void testHashAndEquality() {
        String A = "[(?x breaks ?y) -> (?y brokenBy ?x)]";
        String B = "[(?a Q b) -> (?a rdf:type U)]";
        RuleSet rsA = RuleSet.create(A), rsA2 = RuleSet.create(A);
        RuleSet rsB = RuleSet.create(B);
        assertEquals(rsA.getRules(), rsA2.getRules());
        assertEquals(rsA, rsA2);
        assertDiffer(rsA, rsB);
        assertEquals(rsA.hashCode(), rsA2.hashCode());
        assertFalse(rsA.hashCode() == rsB.hashCode());
    }
}
